The gas laws can be manipulated to provide a slew of quantitative data. The ideal gas law relates moles and volume. Moles are related to mass and molar mass. Mass and volume are related to density. Through algebraic manipulation of the gas laws, it is possible to derive an equation relating the molar mass, temperature, pressure, and density of a gas. This is an advanced topic for honors level chemistry students. Worksheets for this topic are available free of charge on my website at www.evanschemistrycorner.com.